Metallic roofing



(No Mo'del.)jv 2 Sheets-Sheet 1.

METALLIC ROOFING No. 508,193. Patented Nov. '7, 1893.

THE Marlon. LITHOGRAY-HINC; cuMPANv,

mahmsmn. n. c.

(No Model.) 2 Sheets-Sheet 2.

J. TYRA.

METALLIG ROOFING. No. 508,193. I Patented Nov. 7, 1893.

UNITED STATES PATENT OFFICE.

JOSEPH TYRA, OF MINNEAPOLIS, MINNESOTA.

M ETALLIC. ROOFING.

STPEGIFIGAIION forming part of Letters Patent No. 508,193, dated November '7, 1893.

Application filed June 20 1892- To all whom it may concern:

Be it known that I, JOSEPH TYRA, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Metallic Roofing; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. My invention relates to metallic roofing.

It was especially designed for use in connection with copper plate roofing, with a view of constructing the roof surface entirely of copper and holding the same in place, without the use of nails or screws on its shedding surfaces. To this end, I employ raised joint strips which are rigidly secured in position, by bolts or otherwise, crosswise of the rafters or roof-framing and underlie the lower margin of the upper member of each pair of interlocking plates; and I hold the plates to the strips by means of copper cleats or straps, which embrace the strips and have their free ends interlocking with the upper margin of the lower member of each pair of interlockin g plates. The plates themselves are jointed 1 over the upper lower margin or at the back of the strips. When thus arranged, the copper cleat will then hold both interlocked plates to the strips, one branch of the cleat serving to hold the plates down flat against the rafters or roof-framing, and the other branch of the cleat to hold the said plates from slipping downward on the roof. The raised joint strips are preferably made of wood and are wedge shaped in cross section. When thus constructed all parts of the cop'- per-plates rest on a solid bed. In case however, it is desired to make a perfectly fireproof roof the joint strips may be constructed of iron; and in that case, to save material, they would be of angular form, the foot part of which would rest on the rafters, and the raised part or flange would underlie the lower margin of the upper plate. The strips are preferably'bolted to the roof framing; and there may be provided for co-operation therewith, tie-bars or tie-strips underneath the rafters arranged parallel with the joint strips Serial No. 437,244. (No model.)

and bolted together therewith through the roof framing. This latter construction strengthens the roof and assists to hold any filling ma- ,terial,which may be employed between the rafters, such for example, as fire-proofing tiles.

My invention is illustrated in the accompanying drawings, wherein, like letters referring to like parts throughout, Figure 1 is a perspective view looking from the left toward one angle of the roof, some parts being broken away and others shown in section.

Fig. 2 is a detail in end view orsection,showing the strip (wooden) cleat, and interlocking plates as they appear after the joint is formed, the-said parts being shown detached from the roof. Fig. 3 is a similar view to Fig. 2, in which the interlocking parts of the cleat E andithe plates B and B are only partially folded or rolled together. Fig. 4 is a plan view of one of the wooden strips and the cleat. Fig. 5 is a cross section of the same. Fig. 6 is a view in section, showing a slight modification of the construction shown in Fig. 1, wherein tacks are employed, to hold the cleat to the strip. Fig. 7 is a sectional elevation showing a modified construction of the strip. Fig. 8

is a similar view of the modified strip deaway.

A represents a part of one of the roof rafters.

the lower members of the pairs of interlock- B B represent respectively, the upper and ing plates, constituting the metallic roofing.

These plates are made of copper, as before stated, and interlock at their joints, by hook or fold flanges. 1

0 represents the wedgeshaped wooden strips, which are rigidly secured to the roof framing, by bolts 0. These bolts are countersunk in the wooden strips, and may either work through holes in the rafters, or through holes in the filling, if such be employed between the rafters. As shown, they work through the rafters.

D represents the tie-strips underneath the rafters parallel with the joint strips, to which the same are bolted. Instead of the tie-strips washers may be employed between the nut and the under surface of the rafters for filling material. Otherwise, than on the ground of expense, tie-strips are preferable,in virtue of the additional strength for trussing action added to the roof.

E is the copper cleat, which loosely embraces the joint strip, as shown in all the [igures, except Fig. 6, and has its free ends e spread apart and formed with down-turned flanges engaging the up-turned margin of the roof sheet B. In constructing the roof, the plates 13 are banked with their up-turned uppermargins against the back or vertical face of the strip, after the cleat has been placed 01 the strip, Ihe free ends of the cleat are llen ent down v t ha ur e dg of the plate B. Th pla B. i th n pla e n nesttion with the lower or inclined part of the same, extending over the top of thestripand hooking under the back turned flange Oil the. Pl t Bf, th s o y n e leeth 611- gaging fianges are then turned down, as shown, in'Eigs, 2, 6 and 7 of the drawings, forming a tig-litjoint, at the upper lower margin of thestrip. tVhen the joint is thus formed, it. is obvious, that the plates will be held together and locked to the strip. One of the arms, of the cleat will hold the roof plate from rising, and the other from slippingdownward. A this h s is m e of c pp i l of course last as long as the copper roof plate, and the whole constitutes a. roofing which will lastv indefinitely. Inasmuch as thejoint between the upper and lower members of the interlocking plates is formed at the cave or ba el; of the strip as described, no water or snow could enter under the plates, even if the joints should open or unfold more or less under the action of contraction or expansion.

In the construction shown in Figs. 7, 8 and 9, an angle iron strip F is employed as a sub; stitute for the wooden strip 0, shown in the other figures, In all other respects, the con? struction is the same. The use of the angle iron strip, instead of the wooden strip, would be simply to make the roof absolutely fireproof.

In the construction shown in Fig. 6,, the cleat E is shown as tacked by a copper nail G, to the back of the strip; and if so desired, a similartack might be applied to the upper arm of the cleat, extending into, the face of the wooden strip. Inasmuch, however, as these tacks would be under the roof-plates, no, harm could arise from their use, even if they should become loose or rust out. Of course, if copper tacks were employed they would not rust out but might come loose. These tacks would hardly be necessary or of any particular service, after the roof was laid, but would be of convenience in laying the roof, making it easier to form the joint. I contemplate using a single cleat for each pair of interlocking roof plates, if the plates be short, and two or more, if the plates belong. It will of course be understood,that as many may be used as are required to securely hold the roof-plates in position.

Byconstructing the rafters of iron and using the metallic form of the joint strip, as shown at F, in Figs. 7, 8 and 9, my construction affords an absolutely fire-proof roof. If desired to give greater solidity to the roof top, a filling of fire-proof tiling or other similar mate-- rial (not shown) may be placed between the rafters.

The great advantage of this roof is, that when it is laid the shedding surfaces are absolutely without perforations or joints, which can open to admit the water or the snow, under the plates, and the fastenings are of such a ha c e at hey cannot becom oose, by t or o iv a tie fe re t .1 nder th e-h e e n ra tie r xpansion o the me a n Wh n made at orne a escribe such a roof will outlast any huilding to which it, may be appl ed- It is of course obvious, that the invention is qually appl a le o a metal oof of an kind, whether made of copper or any other k nd of eetv et W a l m, d d s e t secu e. y Le ters Patent, is as follows:

1. In a metallic roof, the combination with the interlocking roof plates, of raised joint strips rigidly secured in position crosswise of the rafters underlying; the lower margin of the upper member of each interlocking P ir f p at a a m t l ic cleat embra ng sai strip and having both of its free ends interlocking with the Upp r marginal flange of the lower member of each pair of interlocking plates, substantially as described. A

2. A me all ef ompr sin nte o kin eopper-roof-pletes, raised strips rigidly secured crosswise of the rafters, and underlys the lower ma i of th upper memberof a h lockin Pei! f plat s, an Ger-Pet cleats embracing said strips and having their free ends interlocking with the upper margin or flange of the lower member of each peir of said interlocking plates, whereby the roofplates are securely held in position without the use of nails or screws on their shedding surfaces.

3. In a metallic roof, the combination with the interlocking roof plates of sheet metal, of the wooden joint, strips of wedge shape in eet Q i id y s u d to h ram Work of t r of, and u ly ng he lower margin of the upper member of each pair of roo p a h et me al cl at mbrac said strips and having their free ends spaced apart la l y nd interl cking i h h .1 per margin of the lower member of each of said pair of plates, and the said roof plates a the jo t flang s fol e d wnwa and backward against the vertical face of the sai s rip su st ntia y as and for e P1 pose set forth.

IIO

4. The metallic roofing, comprising raised 'interlockingwiththe s'aid joint flanges, sub- 10 joint strips running crosswise of the face of stantially as and for the purpose set forth. the rafters, the tie-strips underneath the rat- In'testimony whereof I atfix my sign'atnrein ters parallel with thejoint strips and bolted presence of two witnesses. 5 thereto through the rafters or framework of the roof, the roof-p1ates interlocking over JOSEPH TYRA the said joint strips with their fold or joint Witnesses: flanges closed against the backs of the strips, J AS. F. WILLIAMSON, and the cleats embracing the joint strips and EMMA F. ELMORE. 

